Milk cooling device



1951 J. A. KINGSTON MILK COOLING DEVICE 2 Sheets-Sheet 1 Filed April 11, 1945 Attorney Jan. 2, 1951 J, KlNGSTON 2,536,752

I MILK COOLING DEVICE Filed April 11, 1945 2 Sheets-Sheet 2 Inventor 1214/ Attorney Patented Jan. 2, 1951 UNITED} six-res Signor-to 'Gascci nes wtReading mmited neas ing,;England-, aBritishcompanyappiieati-minpririi,1945; Se'iiar In-GratBritain 2 GIaima ACI. g

TliTs inventiom-relates'- to thel coolingwf milk andi h'as particularly in :-view' an improved-method" of and apparatus for' cooling the milk -delivered intoa: milk: container or churn-pf known form in a wli ich ithe milk 'is normally transported. i-The invention is especially:applicable" to use -with=the knowniorm of large 'container -or 'so-called churn V oriican intowhich 'milk' is deliveredirom automaticnnilking equipment working on the vacuum principle.-

The 'invention i's, however; applicable. 1 also sic :the' boolin'ga of milk i in' containers into. =1 whic the milk "hasbeen-"poured" from pailsainto 1 wlfi h i't has been drawn by hand inilking Lor-:byl-': machin'er milking.

The object of the invention-is to provide I apparatus of great efficiencyand simplicity forthecoolingsofvmil-k=. A further-obiect-of the-invention.-is to' 'provide apparatusconstructed and *arraiigdso that the: cooling cairbe efiected-as the 7 5 milk 'enters the containenorchurn iI'L-WhiOh it 2 is afterwards normally transported.

Accordingto the present invention' a-the milk cooling device consistsof a cooling-' l-iquid' jacket composedcf two separable parts; one b'einga base plalte onto which the milk container may be central-lydeposited -and- -the other -=being'- anu'pstand ingl enclosing wa-ll-adap-ted t'o be passed over themilk container andi becomeseated upon the base 1 l plate'g- -in spaced relationto the" container, said jacket being provided with means for passing to cooling liquid i'nto""and "'out"oftlieliintervening space and with means for ensuring a. liquid-tight joint between the separable parts of the jacket? The cooling liquid may be madetotralverse the annular space between 'themilk container and 5 the jacket'wall either in an upward dir ction-er in a d'ownwarcl direction, and the milk' to be cooled may be 'c'ha-rged into the container'in bul'kircm: milk pails in #the usual way. butpreferablyr=asa flowing film-spread upon tl e internal surface of 40 the sa-id-container so that it undergoes extensivecooling as it is descending.

In order to determine a symmetrical spacing of the milk container andthcoolirfg jacket, location means such as one or or annular ribs onzii thelik oniithe faceof the base plate mar/ te provided. Alternatively, or in addition to such annular ribs, one or more spacing ribs or distance pieces or a long spiral rib may be provided externally on the wall of the container or internally on the cooling jacket wall; in the case of a spiral rib it also serves to prolong the path of flow of the cooling liquid. Container-locating means on the cooling jacket wall are preferred as this enables existing milk containers or churns ous -'.d-istributingtdevicesz may be employed: for he internal surface oi -1the" con-tainer just witl'iin the forms of distr'ibutors above referred to and: 2e

, from automatic vac'uunrsinilking 'equipmentj'and v 587%93? Aprilt i; I94

to be iiempl'oyed'e 'laMansi will also generallyizbe required to hold down the container when: empty from iheingibuoyedmp by Lthe cooling liquid; and forlthisl-purpose it is convenientto providemeans suchas sloping stop plates on'izthe internal sur faceof'the cooling 'jacket wallfor coeactionwvith theihandles'o'f the containen 1 Inrordento spread ithe-entering milk as a onith'e internal "surface of themilk container; vari ting over oriinto the. mouth oropenirend .of "the con'tain'er Such a: device ma'yi i or exampla com prise'a coneythe peripheral' edge20f Which'atth baseiiis situated within a shortdistance "of'ithe mouth or upperends thereof:'-so"- that -the: milk flowing lo've'r the,=;cone :Will-aspontaneouslyl.shoot in mm iform ionto th'ei container 'wallzxr Another form of distributingidev ice consists ofsa panl-aor tra-y'insertableiinto the container inouthzandper forated' so Fthatfthes milk escapes from: the pan-sor tray as a multitude of finejets or astreams di rected against the vcontainerwall:

Embodiments" "of the invention using"zthe two plo'ying itwo-" 'diflerent jacket' constructions "Will I now befdescl ibd'i iby "Wail 2101' e'xamp1e;:with theaid-of the accompanying drawings, in whichlFig ure fl: is a vertical secti'onalelevationof a milk churnlin position within a" cooling device =and beingofe'dfwithcmilk in accordance with the "present 4: invention-I Figure-2 illustrates certain mo'difica tionsofit-he constructioncf Figure "1', and Figure 3 is a fragmentaryt'view"illustratingta further modifications-concerned with: the base of the Botlr iorms of :apparatus illustrated by 1 i1 and '12 ofiith'e" drawingsareintended r: for use with rniik' churns or known form','as com mo'n-l'y employed? inztranspcrtingl 2 milk received comprising 'arcylindricalibody portionsurmounted by a con cal shoulder portion which in turnis ii surmounted by a cylindrical neck portion; Referring-"' first more l particularly to Figure" niim'eral' l indicates a ahumra abiW de'shribd'g sand: the water ."cooling lieviceW consists of the base plate 3 and the upstanding jacket wall 4, the latter approximating in shape to the side wall, shoulder, and neck of the churn. The base of the churn rests on blocks 2 on the base plate 3. Within the jacket Wall 4 is provided a spiral rib 5 which locates the churn l centrally within the wall 4 to provide a substantially uniform narrow space 6 between the churn and the jacket wall for the passage therethrough of cooling water. When the churn has been placed on the base 3, and the jacket wall 4 has been lowered over the churn into its enclosing position, the wall 4 is clamped on to a jointing ring I on the floor of the dish-like base plate 3 by means of clamping bolts 8 extending between flange rings mounted on the wall 4 and base 3 to provide a fluid-tight joint. A duct 9 in the base 3 and a duct I provided on the upper part of the jacket 4 serve as inlet and outlet respectively, or vice versa, of cooling liquid. As the jacket wall 4 is lowered into position on the base 3 over the churn, contact of the handles ll of the churn with the shoulder of the wall 4 prevents the churn when empty from being buoyed up by the cooling water.

I2 is a milk distributor of conical form supported on a central vent pipe l3 depending from a milk hopper M. The milk hopper i4 is supported on the rim [5 of the mouth of the churn by means of a flared outlet I9 lined with a packing material It to form a fluid-tight connection between the outlet l9 and rim [5. The hopper I4 is positioned so that the conical distributor I2 has its peripheral edge disposed centrally within the churn mouth and situated within a short distance of the internal surface thereof. Milk poured into the hopper 14, as for example from automatic vacuum milking equipment, passes through the flared outlet [6 on to the conical distributor [2, over the edge of which the milk shoots as a flowing film which spreads over and flows down the internal surface of the churn. Simultaneously cold water under pressure is caused to flow within the space between the churn and the jacket wall to cool the churn wall. It is,

of course, realized that the total area of the milk film inevitably decreases as the level of the accumulated milk rises in the churn, but even during the later stage of collection there is bulkcooling of the milk owing to the continuous cooling effect of the external cooling stream. Similarly, of course, the cooling may be continued even after the churn is full of milk.

In the alternative form of apparatus illustrated in Figure 2, the jacket wall I! of the cooling device does not conform to the upper part of the churn i, but is of plain cylindrical form. A series of container-locating studs such as shown at 58 may be provided within the wall 17 which is clamped in fluid-tight manner to the base 3 by extended hook bolts l9. The upper end of the bolt is passes through a conical hole I!) in the flange at the top of the wall I! so that when the clamping nut 49 is slackened the lower end of the bolt can be swung clear of the base 3. Buoyf The milk discharges from the lateral perforations 24 as fine lateral jets or streams which spread evenly over the internal surface of the churn and unite to form a continuous flowing film. If desired a filter may be fitted into the annular channel 23 above the perforated tray.

In the alternativ construction shown in Figure 3, the jointing ring 1 is provided outside a centering annular rib 3 on the base plate 3 instead of inside of the base plate rim as in Figures 1 and 2.

What I claim is:

1. A cooling jacket for milk containers of the type having a cylindrical body portion, a conical shoulder portion, a cylindrical neck portion and handles extending upwardly from said cylindrical portion and comprising a base member for supporting a milk container, a separable jacket member on said base member, said jacket member having a cylindrical body portion, a conical shoulder portion inwardly directed from said cylindrical body portion and a cylindrical neck portion, said jacket member being larger than said milk container but corresponding in shape thereto, said jacket member having an open lower end resting on said base member, fluid sealing means between said jacket and said base, cooling fluid inlet means in said base opening into said jacket, cooling fiuid outlet means in said jacket and spacing means on the internal wall of said jacket for spacing said jacket and said milk container and forming a cooling fluid chamber therebetweenjsaid jacket being placeable over said milk container on said base, after said milk container has been placed thereon, by passing said jacket over the top of said container onto said base, said conical shoulder portion on said separable jacket contacting the handles on said milk container and preventing said container from rising under the buoyancy efiect of cooling liquid in the jacket.

2. A cooling jacket for milk containers as claimed in claim 1, said spacing means on said jacket comp-rising a spiral rib on the internal wall of said cooling jacket, said spiral rib forming a spiral cooling fluid passage between said jacket and said milk container for prolonging the flow of said fluid from said inlet to said outlet.

JONAS ARTHUR KINGSTON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 939,021 Hendrix Nov. 2, 1909 1,398,787 McLean Nov. 29, 1921 1,850,500 Goble Mar. 22, 1932 2,060,496 Glaser et al Nov. 10, 1936 2,293,041 Borden Aug. 18, 1942 2,391,876 Brown Jan. 1, 1946 FOREIGN PATENTS Number Country Date 577,087 Great Britain May 3, 1946 

